September · Thailand
Best time to visit Sukhothai in September Weather, crowds & prices
Weather in Sukhothai in September
Average temperature 28°C, 331 mm of rain, about 16 days with 6+ hours of sunshine and 86% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.0/10
Ranked #12 of 12 months
- Avg temp
- 28°C
- Rainfall
- 331 mm
- Humidity
- 86%
- Days with 6h+ sun
- 16
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Sukhothai scores 3.0/10 for sightseeing and cultural travel - ranked #12 of 12. Expect around 28°C, 331 mm of rain, and roughly 16 days with 6+ hours of sunshine this month.
Sukhothai is the ruined first capital of Siam, its UNESCO historical park of temples best explored by bicycle.
September in Sukhothai — off-season conditions
September averages 28°C (82°F) and humidity near 86%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
331 mm of rain puts this in monsoon territory — about 16 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 3/10 here, 12th of 12 months, against 8.8/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? January scores 5.8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Sukhothai in September?
- In September, Sukhothai averages 28°C, 331 mm of rain, and about 16 days with 6+ hours of sunshine. Its climate-comfort score is 3.0/10.
- Is September a good time to visit Sukhothai?
- September earns a 3.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sukhothai in September?
- Expect about 331 mm of rain in September. Average humidity is 86% and there are about 16 days with 6+ hours of sunshine.
Curated in Sukhothai
Tickets & experiences
Things to do in Sukhothai
Sukhothai, Thailand. Live activities and tours from GetYourGuide, matched to this destination.